Is UMBO a valid Scrabble word?
YES — UMBO is a valid Scrabble word 8 points
Scrabble® and Words With Friends® points for UMBO
UMBO is a valid Scrabble US/CAN word worth 8 points:
U1M3B3O1
UMBO is valid in Scrabble UK (World) —
U1M3B3O1
UMBO is a valid Words With Friends word worth 11 points:
U2M4B4O1